Php/docs/function.get-class
get_class
(PHP 4, PHP 5, PHP 7)
get_class — Returns the name of the class of an object
Description
get_class
([ object $object
] ) : string
Gets the name of the class of the given object
.
Parameters
object
The tested object. This parameter may be omitted when inside a class.
Note:
Explicitly passing
NULL
as theobject
is no longer allowed as of PHP 7.2.0. The parameter is still optional and calling get_class() without a parameter from inside a class will work, but passingNULL
now emits anE_WARNING
notice.
Return Values
Returns the name of the class of which object
is an
instance. Returns FALSE
if object
is not an
object.
If object
is omitted when inside a class, the
name of that class is returned.
If the object
is an instance of a class which exists
in a namespace, the qualified namespaced name of that class is returned.
Errors/Exceptions
If get_class() is called with anything other than an
object, an E_WARNING
level error is raised.
Changelog
Version | Description |
---|---|
7.2.0 | Prior to this version the default value for object
was |
Examples
Example #1 Using get_class()
<?phpclass foo { function name() { echo "My name is " , get_class($this) , "\n"; }}// create an object$bar = new foo();// external callecho "Its name is " , get_class($bar) , "\n";// internal call$bar->name();?>
The above example will output:
Its name is foo My name is foo
Example #2 Using get_class() in superclass
<?phpabstract class bar { public function __construct() { var_dump(get_class($this)); var_dump(get_class()); }}class foo extends bar {}new foo;?>
The above example will output:
string(3) "foo" string(3) "bar"
Example #3 Using get_class() with namespaced classes
<?phpnamespace Foo\Bar;class Baz { public function __construct() { }}$baz = new \Foo\Bar\Baz;var_dump(get_class($baz));?>
The above example will output:
string(11) "Foo\Bar\Baz"
See Also
- get_called_class() - The "Late Static Binding" class name
- get_parent_class() - Retrieves the parent class name for object or class
- gettype() - Get the type of a variable
- is_subclass_of() - Checks if the object has this class as one of its parents or implements it